window.h revision 29392a4e5bedcff53a1d1f6674c73de00e0e5055
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H 18#define SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H 19 20#include <stdint.h> 21#include <string.h> 22#include <sys/cdefs.h> 23#include <system/graphics.h> 24#include <cutils/native_handle.h> 25 26__BEGIN_DECLS 27 28/*****************************************************************************/ 29 30#define ANDROID_NATIVE_MAKE_CONSTANT(a,b,c,d) \ 31 (((unsigned)(a)<<24)|((unsigned)(b)<<16)|((unsigned)(c)<<8)|(unsigned)(d)) 32 33#define ANDROID_NATIVE_WINDOW_MAGIC \ 34 ANDROID_NATIVE_MAKE_CONSTANT('_','w','n','d') 35 36#define ANDROID_NATIVE_BUFFER_MAGIC \ 37 ANDROID_NATIVE_MAKE_CONSTANT('_','b','f','r') 38 39// --------------------------------------------------------------------------- 40 41typedef const native_handle_t* buffer_handle_t; 42 43// --------------------------------------------------------------------------- 44 45typedef struct android_native_rect_t 46{ 47 int32_t left; 48 int32_t top; 49 int32_t right; 50 int32_t bottom; 51} android_native_rect_t; 52 53// --------------------------------------------------------------------------- 54 55typedef struct android_native_base_t 56{ 57 /* a magic value defined by the actual EGL native type */ 58 int magic; 59 60 /* the sizeof() of the actual EGL native type */ 61 int version; 62 63 void* reserved[4]; 64 65 /* reference-counting interface */ 66 void (*incRef)(struct android_native_base_t* base); 67 void (*decRef)(struct android_native_base_t* base); 68} android_native_base_t; 69 70typedef struct ANativeWindowBuffer 71{ 72#ifdef __cplusplus 73 ANativeWindowBuffer() { 74 common.magic = ANDROID_NATIVE_BUFFER_MAGIC; 75 common.version = sizeof(ANativeWindowBuffer); 76 memset(common.reserved, 0, sizeof(common.reserved)); 77 } 78 79 // Implement the methods that sp<ANativeWindowBuffer> expects so that it 80 // can be used to automatically refcount ANativeWindowBuffer's. 81 void incStrong(const void* id) const { 82 common.incRef(const_cast<android_native_base_t*>(&common)); 83 } 84 void decStrong(const void* id) const { 85 common.decRef(const_cast<android_native_base_t*>(&common)); 86 } 87#endif 88 89 struct android_native_base_t common; 90 91 int width; 92 int height; 93 int stride; 94 int format; 95 int usage; 96 97 void* reserved[2]; 98 99 buffer_handle_t handle; 100 101 void* reserved_proc[8]; 102} ANativeWindowBuffer_t; 103 104// Old typedef for backwards compatibility. 105typedef ANativeWindowBuffer_t android_native_buffer_t; 106 107// --------------------------------------------------------------------------- 108 109/* attributes queriable with query() */ 110enum { 111 NATIVE_WINDOW_WIDTH = 0, 112 NATIVE_WINDOW_HEIGHT = 1, 113 NATIVE_WINDOW_FORMAT = 2, 114 115 /* The minimum number of buffers that must remain un-dequeued after a buffer 116 * has been queued. This value applies only if set_buffer_count was used to 117 * override the number of buffers and if a buffer has since been queued. 118 * Users of the set_buffer_count ANativeWindow method should query this 119 * value before calling set_buffer_count. If it is necessary to have N 120 * buffers simultaneously dequeued as part of the steady-state operation, 121 * and this query returns M then N+M buffers should be requested via 122 * native_window_set_buffer_count. 123 * 124 * Note that this value does NOT apply until a single buffer has been 125 * queued. In particular this means that it is possible to: 126 * 127 * 1. Query M = min undequeued buffers 128 * 2. Set the buffer count to N + M 129 * 3. Dequeue all N + M buffers 130 * 4. Cancel M buffers 131 * 5. Queue, dequeue, queue, dequeue, ad infinitum 132 */ 133 NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS = 3, 134 135 /* Check whether queueBuffer operations on the ANativeWindow send the buffer 136 * to the window compositor. The query sets the returned 'value' argument 137 * to 1 if the ANativeWindow DOES send queued buffers directly to the window 138 * compositor and 0 if the buffers do not go directly to the window 139 * compositor. 140 * 141 * This can be used to determine whether protected buffer content should be 142 * sent to the ANativeWindow. Note, however, that a result of 1 does NOT 143 * indicate that queued buffers will be protected from applications or users 144 * capturing their contents. If that behavior is desired then some other 145 * mechanism (e.g. the GRALLOC_USAGE_PROTECTED flag) should be used in 146 * conjunction with this query. 147 */ 148 NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER = 4, 149 150 /* Get the concrete type of a ANativeWindow. See below for the list of 151 * possible return values. 152 * 153 * This query should not be used outside the Android framework and will 154 * likely be removed in the near future. 155 */ 156 NATIVE_WINDOW_CONCRETE_TYPE = 5, 157 158 159 /* 160 * Default width and height of the ANativeWindow, these are the dimensions 161 * of the window irrespective of the NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS 162 * call. 163 */ 164 NATIVE_WINDOW_DEFAULT_WIDTH = 6, 165 NATIVE_WINDOW_DEFAULT_HEIGHT = 7, 166 167 /* 168 * transformation that will most-likely be applied to buffers. This is only 169 * a hint, the actual transformation applied might be different. 170 * 171 * INTENDED USE: 172 * 173 * The transform hint can be used by a producer, for instance the GLES 174 * driver, to pre-rotate the rendering such that the final transformation 175 * in the composer is identity. This can be very useful when used in 176 * conjunction with the h/w composer HAL, in situations where it 177 * cannot handle arbitrary rotations. 178 * 179 * 1. Before dequeuing a buffer, the GL driver (or any other ANW client) 180 * queries the ANW for NATIVE_WINDOW_TRANSFORM_HINT. 181 * 182 * 2. The GL driver overrides the width and height of the ANW to 183 * account for NATIVE_WINDOW_TRANSFORM_HINT. This is done by querying 184 * NATIVE_WINDOW_DEFAULT_{WIDTH | HEIGHT}, swapping the dimensions 185 * according to NATIVE_WINDOW_TRANSFORM_HINT and calling 186 * native_window_set_buffers_dimensions(). 187 * 188 * 3. The GL driver dequeues a buffer of the new pre-rotated size. 189 * 190 * 4. The GL driver renders to the buffer such that the image is 191 * already transformed, that is applying NATIVE_WINDOW_TRANSFORM_HINT 192 * to the rendering. 193 * 194 * 5. The GL driver calls native_window_set_transform to apply 195 * inverse transformation to the buffer it just rendered. 196 * In order to do this, the GL driver needs 197 * to calculate the inverse of NATIVE_WINDOW_TRANSFORM_HINT, this is 198 * done easily: 199 * 200 * int hintTransform, inverseTransform; 201 * query(..., NATIVE_WINDOW_TRANSFORM_HINT, &hintTransform); 202 * inverseTransform = hintTransform; 203 * if (hintTransform & HAL_TRANSFORM_ROT_90) 204 * inverseTransform ^= HAL_TRANSFORM_ROT_180; 205 * 206 * 207 * 6. The GL driver queues the pre-transformed buffer. 208 * 209 * 7. The composer combines the buffer transform with the display 210 * transform. If the buffer transform happens to cancel out the 211 * display transform then no rotation is needed. 212 * 213 */ 214 NATIVE_WINDOW_TRANSFORM_HINT = 8, 215}; 216 217/* valid operations for the (*perform)() hook */ 218enum { 219 NATIVE_WINDOW_SET_USAGE = 0, 220 NATIVE_WINDOW_CONNECT = 1, /* deprecated */ 221 NATIVE_WINDOW_DISCONNECT = 2, /* deprecated */ 222 NATIVE_WINDOW_SET_CROP = 3, 223 NATIVE_WINDOW_SET_BUFFER_COUNT = 4, 224 NATIVE_WINDOW_SET_BUFFERS_GEOMETRY = 5, /* deprecated */ 225 NATIVE_WINDOW_SET_BUFFERS_TRANSFORM = 6, 226 NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP = 7, 227 NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS = 8, 228 NATIVE_WINDOW_SET_BUFFERS_FORMAT = 9, 229 NATIVE_WINDOW_SET_SCALING_MODE = 10, 230 NATIVE_WINDOW_LOCK = 11, /* private */ 231 NATIVE_WINDOW_UNLOCK_AND_POST = 12, /* private */ 232 NATIVE_WINDOW_API_CONNECT = 13, /* private */ 233 NATIVE_WINDOW_API_DISCONNECT = 14, /* private */ 234}; 235 236/* parameter for NATIVE_WINDOW_[API_][DIS]CONNECT */ 237enum { 238 /* Buffers will be queued by EGL via eglSwapBuffers after being filled using 239 * OpenGL ES. 240 */ 241 NATIVE_WINDOW_API_EGL = 1, 242 243 /* Buffers will be queued after being filled using the CPU 244 */ 245 NATIVE_WINDOW_API_CPU = 2, 246 247 /* Buffers will be queued by Stagefright after being filled by a video 248 * decoder. The video decoder can either be a software or hardware decoder. 249 */ 250 NATIVE_WINDOW_API_MEDIA = 3, 251 252 /* Buffers will be queued by the the camera HAL. 253 */ 254 NATIVE_WINDOW_API_CAMERA = 4, 255}; 256 257/* parameter for NATIVE_WINDOW_SET_BUFFERS_TRANSFORM */ 258enum { 259 /* flip source image horizontally */ 260 NATIVE_WINDOW_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H , 261 /* flip source image vertically */ 262 NATIVE_WINDOW_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V, 263 /* rotate source image 90 degrees clock-wise */ 264 NATIVE_WINDOW_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90, 265 /* rotate source image 180 degrees */ 266 NATIVE_WINDOW_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180, 267 /* rotate source image 270 degrees clock-wise */ 268 NATIVE_WINDOW_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270, 269}; 270 271/* parameter for NATIVE_WINDOW_SET_SCALING_MODE */ 272enum { 273 /* the window content is not updated (frozen) until a buffer of 274 * the window size is received (enqueued) 275 */ 276 NATIVE_WINDOW_SCALING_MODE_FREEZE = 0, 277 /* the buffer is scaled in both dimensions to match the window size */ 278 NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW = 1, 279 /* the buffer is scaled uniformly such that the smaller dimension 280 * of the buffer matches the window size (cropping in the process) 281 */ 282 NATIVE_WINDOW_SCALING_MODE_SCALE_CROP = 2, 283}; 284 285/* values returned by the NATIVE_WINDOW_CONCRETE_TYPE query */ 286enum { 287 NATIVE_WINDOW_FRAMEBUFFER = 0, /* FramebufferNativeWindow */ 288 NATIVE_WINDOW_SURFACE = 1, /* Surface */ 289 NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT = 2, /* SurfaceTextureClient */ 290}; 291 292/* parameter for NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 293 * 294 * Special timestamp value to indicate that timestamps should be auto-generated 295 * by the native window when queueBuffer is called. This is equal to INT64_MIN, 296 * defined directly to avoid problems with C99/C++ inclusion of stdint.h. 297 */ 298static const int64_t NATIVE_WINDOW_TIMESTAMP_AUTO = (-9223372036854775807LL-1); 299 300struct ANativeWindow 301{ 302#ifdef __cplusplus 303 ANativeWindow() 304 : flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0) 305 { 306 common.magic = ANDROID_NATIVE_WINDOW_MAGIC; 307 common.version = sizeof(ANativeWindow); 308 memset(common.reserved, 0, sizeof(common.reserved)); 309 } 310 311 /* Implement the methods that sp<ANativeWindow> expects so that it 312 can be used to automatically refcount ANativeWindow's. */ 313 void incStrong(const void* id) const { 314 common.incRef(const_cast<android_native_base_t*>(&common)); 315 } 316 void decStrong(const void* id) const { 317 common.decRef(const_cast<android_native_base_t*>(&common)); 318 } 319#endif 320 321 struct android_native_base_t common; 322 323 /* flags describing some attributes of this surface or its updater */ 324 const uint32_t flags; 325 326 /* min swap interval supported by this updated */ 327 const int minSwapInterval; 328 329 /* max swap interval supported by this updated */ 330 const int maxSwapInterval; 331 332 /* horizontal and vertical resolution in DPI */ 333 const float xdpi; 334 const float ydpi; 335 336 /* Some storage reserved for the OEM's driver. */ 337 intptr_t oem[4]; 338 339 /* 340 * Set the swap interval for this surface. 341 * 342 * Returns 0 on success or -errno on error. 343 */ 344 int (*setSwapInterval)(struct ANativeWindow* window, 345 int interval); 346 347 /* 348 * Hook called by EGL to acquire a buffer. After this call, the buffer 349 * is not locked, so its content cannot be modified. This call may block if 350 * no buffers are available. 351 * 352 * The window holds a reference to the buffer between dequeueBuffer and 353 * either queueBuffer or cancelBuffer, so clients only need their own 354 * reference if they might use the buffer after queueing or canceling it. 355 * Holding a reference to a buffer after queueing or canceling it is only 356 * allowed if a specific buffer count has been set. 357 * 358 * Returns 0 on success or -errno on error. 359 */ 360 int (*dequeueBuffer)(struct ANativeWindow* window, 361 struct ANativeWindowBuffer** buffer); 362 363 /* 364 * hook called by EGL to lock a buffer. This MUST be called before modifying 365 * the content of a buffer. The buffer must have been acquired with 366 * dequeueBuffer first. 367 * 368 * Returns 0 on success or -errno on error. 369 */ 370 int (*lockBuffer)(struct ANativeWindow* window, 371 struct ANativeWindowBuffer* buffer); 372 /* 373 * Hook called by EGL when modifications to the render buffer are done. 374 * This unlocks and post the buffer. 375 * 376 * The window holds a reference to the buffer between dequeueBuffer and 377 * either queueBuffer or cancelBuffer, so clients only need their own 378 * reference if they might use the buffer after queueing or canceling it. 379 * Holding a reference to a buffer after queueing or canceling it is only 380 * allowed if a specific buffer count has been set. 381 * 382 * Buffers MUST be queued in the same order than they were dequeued. 383 * 384 * Returns 0 on success or -errno on error. 385 */ 386 int (*queueBuffer)(struct ANativeWindow* window, 387 struct ANativeWindowBuffer* buffer); 388 389 /* 390 * hook used to retrieve information about the native window. 391 * 392 * Returns 0 on success or -errno on error. 393 */ 394 int (*query)(const struct ANativeWindow* window, 395 int what, int* value); 396 397 /* 398 * hook used to perform various operations on the surface. 399 * (*perform)() is a generic mechanism to add functionality to 400 * ANativeWindow while keeping backward binary compatibility. 401 * 402 * DO NOT CALL THIS HOOK DIRECTLY. Instead, use the helper functions 403 * defined below. 404 * 405 * (*perform)() returns -ENOENT if the 'what' parameter is not supported 406 * by the surface's implementation. 407 * 408 * The valid operations are: 409 * NATIVE_WINDOW_SET_USAGE 410 * NATIVE_WINDOW_CONNECT (deprecated) 411 * NATIVE_WINDOW_DISCONNECT (deprecated) 412 * NATIVE_WINDOW_SET_CROP 413 * NATIVE_WINDOW_SET_BUFFER_COUNT 414 * NATIVE_WINDOW_SET_BUFFERS_GEOMETRY (deprecated) 415 * NATIVE_WINDOW_SET_BUFFERS_TRANSFORM 416 * NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP 417 * NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS 418 * NATIVE_WINDOW_SET_BUFFERS_FORMAT 419 * NATIVE_WINDOW_SET_SCALING_MODE 420 * NATIVE_WINDOW_LOCK (private) 421 * NATIVE_WINDOW_UNLOCK_AND_POST (private) 422 * NATIVE_WINDOW_API_CONNECT (private) 423 * NATIVE_WINDOW_API_DISCONNECT (private) 424 * 425 */ 426 427 int (*perform)(struct ANativeWindow* window, 428 int operation, ... ); 429 430 /* 431 * Hook used to cancel a buffer that has been dequeued. 432 * No synchronization is performed between dequeue() and cancel(), so 433 * either external synchronization is needed, or these functions must be 434 * called from the same thread. 435 * 436 * The window holds a reference to the buffer between dequeueBuffer and 437 * either queueBuffer or cancelBuffer, so clients only need their own 438 * reference if they might use the buffer after queueing or canceling it. 439 * Holding a reference to a buffer after queueing or canceling it is only 440 * allowed if a specific buffer count has been set. 441 */ 442 int (*cancelBuffer)(struct ANativeWindow* window, 443 struct ANativeWindowBuffer* buffer); 444 445 446 void* reserved_proc[2]; 447}; 448 449 /* Backwards compatibility: use ANativeWindow (struct ANativeWindow in C). 450 * android_native_window_t is deprecated. 451 */ 452typedef struct ANativeWindow ANativeWindow; 453typedef struct ANativeWindow android_native_window_t; 454 455/* 456 * native_window_set_usage(..., usage) 457 * Sets the intended usage flags for the next buffers 458 * acquired with (*lockBuffer)() and on. 459 * By default (if this function is never called), a usage of 460 * GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE 461 * is assumed. 462 * Calling this function will usually cause following buffers to be 463 * reallocated. 464 */ 465 466static inline int native_window_set_usage( 467 struct ANativeWindow* window, int usage) 468{ 469 return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage); 470} 471 472/* deprecated. Always returns 0. Don't call. */ 473static inline int native_window_connect( 474 struct ANativeWindow* window, int api) { 475 return 0; 476} 477 478/* deprecated. Always returns 0. Don't call. */ 479static inline int native_window_disconnect( 480 struct ANativeWindow* window, int api) { 481 return 0; 482} 483 484/* 485 * native_window_set_crop(..., crop) 486 * Sets which region of the next queued buffers needs to be considered. 487 * A buffer's crop region is scaled to match the surface's size. 488 * 489 * The specified crop region applies to all buffers queued after it is called. 490 * 491 * if 'crop' is NULL, subsequently queued buffers won't be cropped. 492 * 493 * An error is returned if for instance the crop region is invalid, 494 * out of the buffer's bound or if the window is invalid. 495 */ 496static inline int native_window_set_crop( 497 struct ANativeWindow* window, 498 android_native_rect_t const * crop) 499{ 500 return window->perform(window, NATIVE_WINDOW_SET_CROP, crop); 501} 502 503/* 504 * native_window_set_buffer_count(..., count) 505 * Sets the number of buffers associated with this native window. 506 */ 507static inline int native_window_set_buffer_count( 508 struct ANativeWindow* window, 509 size_t bufferCount) 510{ 511 return window->perform(window, NATIVE_WINDOW_SET_BUFFER_COUNT, bufferCount); 512} 513 514/* 515 * native_window_set_buffers_geometry(..., int w, int h, int format) 516 * All buffers dequeued after this call will have the dimensions and format 517 * specified. A successful call to this function has the same effect as calling 518 * native_window_set_buffers_size and native_window_set_buffers_format. 519 * 520 * XXX: This function is deprecated. The native_window_set_buffers_dimensions 521 * and native_window_set_buffers_format functions should be used instead. 522 */ 523static inline int native_window_set_buffers_geometry( 524 struct ANativeWindow* window, 525 int w, int h, int format) 526{ 527 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_GEOMETRY, 528 w, h, format); 529} 530 531/* 532 * native_window_set_buffers_dimensions(..., int w, int h) 533 * All buffers dequeued after this call will have the dimensions specified. 534 * In particular, all buffers will have a fixed-size, independent form the 535 * native-window size. They will be scaled according to the scaling mode 536 * (see native_window_set_scaling_mode) upon window composition. 537 * 538 * If w and h are 0, the normal behavior is restored. That is, dequeued buffers 539 * following this call will be sized to match the window's size. 540 * 541 * Calling this function will reset the window crop to a NULL value, which 542 * disables cropping of the buffers. 543 */ 544static inline int native_window_set_buffers_dimensions( 545 struct ANativeWindow* window, 546 int w, int h) 547{ 548 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS, 549 w, h); 550} 551 552/* 553 * native_window_set_buffers_format(..., int format) 554 * All buffers dequeued after this call will have the format specified. 555 * 556 * If the specified format is 0, the default buffer format will be used. 557 */ 558static inline int native_window_set_buffers_format( 559 struct ANativeWindow* window, 560 int format) 561{ 562 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_FORMAT, format); 563} 564 565/* 566 * native_window_set_buffers_transform(..., int transform) 567 * All buffers queued after this call will be displayed transformed according 568 * to the transform parameter specified. 569 */ 570static inline int native_window_set_buffers_transform( 571 struct ANativeWindow* window, 572 int transform) 573{ 574 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TRANSFORM, 575 transform); 576} 577 578/* 579 * native_window_set_buffers_timestamp(..., int64_t timestamp) 580 * All buffers queued after this call will be associated with the timestamp 581 * parameter specified. If the timestamp is set to NATIVE_WINDOW_TIMESTAMP_AUTO 582 * (the default), timestamps will be generated automatically when queueBuffer is 583 * called. The timestamp is measured in nanoseconds, and is normally monotonically 584 * increasing. The timestamp should be unaffected by time-of-day adjustments, 585 * and for a camera should be strictly monotonic but for a media player may be 586 * reset when the position is set. 587 */ 588static inline int native_window_set_buffers_timestamp( 589 struct ANativeWindow* window, 590 int64_t timestamp) 591{ 592 return window->perform(window, NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP, 593 timestamp); 594} 595 596/* 597 * native_window_set_scaling_mode(..., int mode) 598 * All buffers queued after this call will be associated with the scaling mode 599 * specified. 600 */ 601static inline int native_window_set_scaling_mode( 602 struct ANativeWindow* window, 603 int mode) 604{ 605 return window->perform(window, NATIVE_WINDOW_SET_SCALING_MODE, 606 mode); 607} 608 609 610/* 611 * native_window_api_connect(..., int api) 612 * connects an API to this window. only one API can be connected at a time. 613 * Returns -EINVAL if for some reason the window cannot be connected, which 614 * can happen if it's connected to some other API. 615 */ 616static inline int native_window_api_connect( 617 struct ANativeWindow* window, int api) 618{ 619 return window->perform(window, NATIVE_WINDOW_API_CONNECT, api); 620} 621 622/* 623 * native_window_api_disconnect(..., int api) 624 * disconnect the API from this window. 625 * An error is returned if for instance the window wasn't connected in the 626 * first place. 627 */ 628static inline int native_window_api_disconnect( 629 struct ANativeWindow* window, int api) 630{ 631 return window->perform(window, NATIVE_WINDOW_API_DISCONNECT, api); 632} 633 634 635__END_DECLS 636 637#endif /* SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H */ 638